i have filled btech/barch form in amu by mistake instead of btech only. should i also have to give paper 2, if i just want admission in btech.
If you have filled then you should give the exams but you don't want to then there is no issue because its not compulsory to appear in B.Arch paper.
Although it will be compulsory to appear in Paper 1 for B.Tech.Papaer 2 is for architecture and is based on your choice whether to appear in that or not.
I hope this helps.